peter_n wrote:
These self-adjusting clamps have been on sale since 2012 so I'm not quite sure why people still think that all RRS clamps will only work properly with RRS or Wimberley plates.

Probably because most people don't change out their clamps annually. RRS clamps tend to last a long time so you probably won't buy a new one very often. Sunwayfoto has adjustable lever clamps (tweaking knob & lever). I haven't tried one yet but the design looks interesting.

I prefer Markins screw knob clamps to the one and only RRS lever clamp I have. I had a Markins clamp custom machined to fit on the ball stem of my A-S Z1, so unfortunately I have no experience of a 60mm RRS lever clamp on the Z1.

Fitting a clamp that's designed for the Z1 is very straightforward, however getting the circular base that comes with the ballhead off is not so straightforward.